import React, { Component } from 'react17'
import { increment, decrement, incrementAsync } from "../../redux-store/actions/count";
// import { decrement } from "../../redux-store/actions/count";
// import { incrementAsync } from "../../redux-store/actions/count";
import { connect } from "react-redux";

class Count extends Component {
    // state = { carName: '奔驰C63' }

    increment = () => {
        console.log(this.selectNumber);
        const { value } = this.selectNumber;
        console.log(value * 1);
        this.props.increment(value * 1)
    }

    decrement = () => {
        const { value } = this.selectNumber;
        this.props.decrement(value * 1)
    }

    incrementIfOdd = () => {
        console.log("incrementIfOdd", this.props.count)
        const { value } = this.selectNumber;
        if (this.props.count % 2 === 1) {
            this.props.increment(value * 1)
        }
    }

    incrementAsync = () => {
        const { value } = this.selectNumber;
        // this.props.incrementAsync(value * 1, 500)
        this.props.incrementAsync(value * 1 + 500)
    }

    render() {
        return (
            <div>
                <h2>我是Count组件，下方组件总人数为：{this.props.countPersons}</h2>
                <h4>当前求和为：{this.props.count}</h4>
                <select ref={c => this.selectNumber = c}>
                   <option value="1">1</option>
                    <option value="2">2</option>
                    <option value="3">3</option>
                </select>
                &nbsp;
                <button onClick={this.increment}>+</button>&nbsp;
                <button onClick={this.decrement}>-</button>&nbsp;
                <button onClick={this.incrementIfOdd}>当前求和为奇数时加</button>&nbsp;
                <button onClick={this.incrementAsync}>异步加</button>&nbsp;
            </div>
        )
    }
}

export default connect(
    state => ({ count: state.count, countPersons: state.persons.length }), // persons 和reduces汇总时的名称对应一致
    // { increment: increment, decrement: decrement, incrementAsync: incrementAsync }
    { increment, decrement, incrementAsync }
)(Count);
